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多軸平衡支架
商品簡述：
| MCLA | Counter-balanced lever arm for rats, 6in (15cm) |
| SMCLA | Counter-balanced lever arm for mice, 3.5in (9cm) |
| MCLA/MED | Counter-balanced lever arm, for Med Associates rat self admin cage |
| SMCLA/MED | Counter-balanced lever arm, for Med Associates mouse self admin cage |